Routing number is a nine digit code assigned by the bank to its branches in different states for the purpose of identity of the location of the account while carrying out a number of online as well as offline banking processes.
Logrolling is the process by which politicians trade support for one issue or piece of legislation in exchange for another politician's support, especially by means of legislative votes (Holcombe 2006).
The Transaction Log provides the means by which either the complete set of tasks of a database transaction are performed or none of them are. It ensures that , via rollback, only valid data is written out to the database, and it allows transactions to be played back to recreate the system state right before a failure.